Amorphous Hf-based foams with aligned, elongated pores

Authors

Marie E. Cox, Northwestern University
Laszlo J. Kecskes, U.S. Army Research Laboratory
Suveen N. Mathaudhu, U.S. Army Research Office
David C. Dunand, Northwestern UniversityFollow

Date of this Version

2012

Citation

Materials Science and Engineering A 533 (2012) 124– 127; doi:10.1016/j.msea.2011.11.032

Abstract

Warm equal channel angular extrusion is used to consolidate a blend of amorphous Hf_44.5Cu₂₇Ni_13.5Ti₅Al₁₀ and crystalline W powders. Dissolution of the W phase results in ∼60% aligned, elongated pores within an amorphous Hf-based matrix exhibiting ductility in compression, but at lower strengths than similar amorphous Zr-based foams due to incomplete bonding between Hf-based powders.